Improvement in plows



E. G. WHITING.

Plow.

No. 1,232. Patented July 11,1839.

NFEIERS. PHOTO-LJ'IHOGRAPHR. WASHINGTON 110v UNITED STATES PATENTOFFICE.

EBENEZER Gr. WHITING, OF RAOINE, WISCONSIN.

' IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 1,232, dated July 11,1839.

To all whom it may concern:

Be it known that I, EBENEZER G. WHITING, of Racine, in the county ofRacine and Territory of Wisconsin, have invented a new and usefulImprovement in Plows, which is described as follows, reference being hadto the annexed. drawings of the same, making part of this specification.

The nature of my invention and improvement consists in making the moldboard straight and flat from the point to about the center, instead of'concave, as heretofore, and at this point to cause it to assume acurvilinear figure in the usual or most approved pattern, by which unionof the curvilinear and straight surface in the mold-board less powerwill be required to draw it through the earth, and the sward will beturned over smooth and even without breaking it up into pieces.

To enable any plow-maker to construct my improvement, I will proceed todescribe the mode of casting this mold-board.

A pattern of the betore'described form and of convenient size (variableat pleasure)ismade of wood. A flask is prepared in the usual manner andthe melted metal poured in the common way.

A pattern for a moldboard of an ordinary size may be of the followingdimensions viz: from the point of the landside to the heel on ahorizontal line, sixinches; from the point to the standard on thecuttingedge, which rises in a straightlineatan angle ofabont twentydegrees with the last-described horizontal line, twelve inches; fromtheheel of the landside to the highest point of the cutting-edge, in anoblique straightline,twelveinches; from the heel of the landside to thegreatest breadth-of the moldboard,oua horizontal plane,twelveinches;from

the point of the mold-board to the end of the straight part thereof,fifteen inches; from the union of the straight part with the curvilinearto the end of the moldboard, twenty inches; but these dimensions may bevaried to suit circumstances without, however, changing the character ofthe invention.

The other parts of the plow are made in the usual manner.

Figure l is a view of the mold-board from the'land. Fig. 2 is a view ofthe side toward the land. Fig. 3 is a bottom view. Fig. 4 is a top view.Fig. 5 is an end view.

Similar lettersin the figures refer to similar parts.

A is theinold-board. B is the point of moldboard. 0 is the heel on thelandside. D is the greatest breadth. E is the straight part; F, thecurvilinear part; G and D, place where the straight and curvilinearparts unite; H, share of the ordinary form.

When the straight and curvilinear parts of the mold-board are united astraight line will be formed from the fore part to the rear end.

The invention and improvement in the plow claimed by me, and which Idesire to secure by Letters Patent, consists in- Making the fore part ofthe mold-board a plain flat surface, in combination with the curvilinearpart of the mold-board, united. at or near the center, as beforedescribed, for preventing thefrietion arising from the accumulation ofearth in the concave fore part of the mold-board.

EUENEZER G. WHITING.

Witnesses:

WM. P. ELLIOT, ED. MAHER.

